Chapter 14: Q1Q (page 390)
What happens to the work done on a jar of orange juice when it is vigorously shaken?
Short Answer
When a jar is vigorously shaken, the work done on the jar is used in increasing the temperature of the orange juice.
Chapter 14: Q1Q (page 390)
What happens to the work done on a jar of orange juice when it is vigorously shaken?
When a jar is vigorously shaken, the work done on the jar is used in increasing the temperature of the orange juice.
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How much heat (in joules) is required to raise the temperature of 34.0 kg of water from \(15{\rm{\circ C}}\)to \(95{\rm{\circ C}}\)
A premature baby in an incubator can be dangerously cooled even when the air temperature in the incubator is warm. Explain.
(II) A 28-g ice cube at its melting point is dropped into an insulated container of liquid nitrogen. How much nitrogen evaporates if it is at its boiling point of 77 K and has a latent heat of vaporization of 200 kJ/kg? Assume for simplicity that the specific heat of ice is a constant and is equal to its value near its melting point.
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(II) High-altitude mountain climbers do not eat snow but always melt it first with a stove. To see why, calculate the energy absorbed from your body if you:
(a) eat 1.0 kg of \({\bf{ - 15\circ C}}\) snow which your body warms to a body temperature of 37°C;
(b) melt 1.0 kg of snow using a stove and drink the resulting 1.0 kg of water at 2°C, which your body has to warm to 37°C.
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